WignerD

WignerD[{j, m1, m2}, ψ, θ, ϕ] gives the Wigner D-function.

WignerD[{j, m1, m2}, θ, ϕ] gives the Wigner D-function with ψ=0.

WignerD[{j, m1, m2}, θ] gives the Wigner D-function with ψ=0 and ϕ=0.

Examples

Compute a Wigner D-function:

WignerD[{2, 1, 0}, Pi/4]
(* -Sqrt[3/8] *)

Please visit the official Wolfram Language Reference for more details.